Table.



.0. S. BURNHAM.

TABLE.

APPLICATION FILED JULY 5, 1911. Q I 1,043,567. ed NOV. 5, 1912.

2 SHEETS-SHEET l.

by I

Attorneys G. S. BURNHAM.

. TABLE.

APPLIOATION FILED JULY 5, 1911.

. 1 043 5 7 Patented NOV. 5, 1912.

2 SHEETSSHEBT 2.

54 Q '75 LB I Z x 5 a A: fllmmzlnventor I 7 I o Attorneys CLARENCE S.BURNHAM, OF CANISTEO, NEW YORK.

TABLE.

Specification of Letters Patent.

Patented Nov. 5, 1912.

Application filed July 5, 1911. Serial No. 636,890.

To all whom it may concern:

Be it known that I, CLARENCE S. Bonn- HAM, a citizen of the UnitedStates, res1ding at Canisteo, in the county of Steuben and State of NewYork, have invented a new and useful Table, of which the following is aspecification.

It is the object of this invention to provide a table having a rotatabletop, provided with foldable leaves, the construction being such thatwhen the table top is rotated, the leaves may be folded downwardly andinwardly, means being pro-} vided for locking the leaves in their foldedpositions.

A further object of the invention is to provide novel means forassembling the table top, for rotation, with the pedestal of the table.

A further object of the invention is to provide a table having apedestal into which the leaves of the table may readily be folded meansbeing provided for locking the leaves in their folded positions.

A further object of the invention is to improve, generally, devices ofthe type to which the present invention appertains.

lVith the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafter de-:

scribed and claimed, it being understood that changes in the preciseembodiment of invention herein disclosed can be made within the scope ofwhat is claimed without departing from the spirit of the invention.

In the accompanying drawings, Figure 1 shows the invention in sideelevation, the leaves of the table being folded inwardly,

into engagement with a pedestal; Fig. Qis' a section upon the line C-Dof Fig. 1, parts being omitted for the sake of clearness, the viewillustrating the parts in the the connecting elements which are unitedwith the leaves, are assembled with the rotatable member; and Fig. 6 isa fragmental plan of the rotatable member which connects the leaves forsimultaneous lifting and lowering, the view depicting the mechanismwhereby the rotatable member is held against movement, thereby toprevent a falling of the leaves.

In carrying out the invention there is provided a base .1 of any desiredform, supporting a platform 2, fixed to and rising from which, is apedestal 3. The pedestal 3 preferably consists of four intersectingwings 4, fashioned at their upper ends with outwardly protrudingextensions 5, the upper edges of the extensions 5 being cut away, asdenoted by the numeral 6.

The invention further includes a pair of intersecting bars 7, locatedabove the wings 4 and in vertical alinement therewith, the bars 7 beingterminally secured to the upper edges of the wings 4. The outer ends ofthe bars 7 are beveled, or undercut, as shown at 8, this featureappearingmost clearly in Fig. 4. The lower ,end of a shaft 9, seen mostclearly in Fig. 4, is mounted in wings 4, at their point ofintersection, the upper end of the shaft 9 being secured in the bars 7,as shown at 10in Fig. 4.

The invention further includes a top 11 preferably of rectangularcontour. To the lower face of the top 11 are secured a series ofstop-blocks 12. To the stop-blocks 12 is secured a segmental retainingmember 14, located beneath the intersecting bars 7. The relation betweenthe retaining member 14 and the bars 7 is such that the top 11 will beheld upon the pedestal 3, for rotation, through the instrumentality-ofthe elements 7 and 14, the retaining member 14 being rounded at itsperiphery, so as to move in close proximity to the inner edges of thewings 4 of the pedestal 3, as shown in Fig. 4. To the under side of thetop 11, about its periphery, cleats 15 are secured, the inner edges ofwhich are beveled or undercut, as shown at 16, to cotiperate, in amanner to be described hereinafter with the corresponding edges 8 of thebars 7; this detail appearing most clearly in Fig. 4.

The invention further includes a series of leaves 17, the leaves 17being preferably triangular, and being hingedly secured to the edges ofthe top 11, the construction being such that when the leaves 17 arefolded upwardly, the superficial area at the top of the table will bedoubled, the rectangular contour of the top, preferably, although notnecessarily, being retained. The leaves 17 are provided along theirinner edges, and

member 20, preferably circular in contour,

and journaled for rotation upon the shaft 9, below the retaining member141, a washer 21 being interposed between the members and 1 1, as shownin Fig. 4c. The rotatable member 20 is supported by a series of blocks22, upheld by a closely compressed, strong, compression spring 23,surrounding the shaft 9 and hearing at its upper end agamst one of theblocks 22, the lower end of the spring 23 bearing against the wings 3,at their point of intersection, as seen most clearly in Fig. 41.. Thefunction of the spring 23, obviously, is to prevent lost motion betweenthe fixed and rotatable portions of the table.

Secured to the lower surface of the rotatable member 20, are a series ofpivot elements 2 1, with which the inner ends of operating rods 25 arepivotally assembled. The operating rods 25 consist of arms 26, theextremities of which. are bent outwardly, to

form fingers 27, adapted to register in cars 28 depending from the pivotmembers 241.. Adjacent their outer ends, the arms 26 0f the operatingrods 25 are twisted, as shown at 29, to form eyes 30, engaged with eyes31, mounted in blocks 32, secured to the under faces of the leaves 17Braces 33 engage at one end with the bloc {S 32, the outer ends of thebraces 33 being engaged in the angles formed by the intersection of thecleats 18 of the leaves 17 and the peripheral, depending rims 3-1 of theleaves, Fig. 3 showing this-detail most clearly.

A means is provided for preventing a rotation of the member 20 upon theshaft 9. This means includes a spring pawl 35, secured to one of thewings 4, the pawl 35 being adapted to engage with a metal faced notch36, or like projection, formed in the periphery of the member 20. Inorder to break the engagement between the pawl 35 and the notch 36, anoperating rod 37 is j ournaled in the pawl 35, and in one of the wings1, adjacent its outer end, the operating rod 37 having at its outer enda suitable hand-hold 38, and at its inner end, a cam head 39, adapted tobear against the inner face of the pawl 35.

The operation of the structure is as f0llows. As shown in Fig. 1, theleaves 17 may be folded downwardly and inwardly, until their. outerangles 40 register in the angles 41 formed by the wings 4 of thepedestal 3, the leaves 17 slanting inwardly, in inclined relation. Thespring pawl 35,

under such circumstances, will be engaged with the notch 36 in themember 20, and thus the member 20 will be prevented from rotating. Theoperating rods 25 will be maintained in the positions shown in Fig. 2,and thus the leaves 17 will be locked. in depending, inwardly slantingpositions. Under such circumstances, the wings +1; will extend to theangles of the top 11, as must be necessary, in order that the leaves 17may move between the wings 4. W hen it is desired to open the leaves 17into the horizontally disposed positions shown in Fig. 3, the hand-hold38 is engaged, rotating the rod 37, the cam head 39 of which, engagingthe inner face of the spring pawl 35, will retract the pawl 35 out ofengagement with the notch 36 in the member 20. One of the leaves 17 isthen seized, and swung upwardly. This upward swinging of the one leaf,will, through the instrumentalit-y of the operating rods 25, cause arotation of the member 20 upon the shaft 9, and a consequentsimultaneous lifting of all of the leaves 17. The leaves 17 are thusshown in dotted line in Fig. 3. In order to hold the leaves .17 in theirelevated positions, the top 11 and the leaves 17 are rotated, until theleaves 17 lie above the extensions 5 of the wings 4, as clearly shown indotted lines in Fig. 3. Thus, the leaves 17 will be upheld, in alinementwith the top 11. When the top 11 is rotated in the manner hereinbeforedescribed, the beveled outer ends 8 of the bars 7 will interlock withthebeveled faces 16 of the cleats 15, and since the cleats 15 aretangential to a circle described by the outer ends of the bars 17, itwill be seen that the top 11 of the table will be wedged upon thepedestal 3, against rotation. In order to lower the leaves 17, the top11 of the table is rotated until the extensions 5 are alined with theangles of the top, whereupon the leaves 17 may be swung downwardly andinwardly, rotating the member 20 until the pawl 35,engaging the notch36, locks the member 20 against rotation, thereby to hold the leaves 17as shown in Fig. 1. It is to be noted that when the top 11 is rotated topermit a folding of the leaves 17, the stop-blocks 12 engage with thebars 7, and thus aline the extensions 5 of the wings, with the angles ofthe top 11, thereby permitting a folding of the leaves 17.

Having thus described the invention, what is claimed is 1. In a deviceof the class described, a pedestal; a top j ournaled upon the pedestal;leaves hinged to the top and supported upon the pedestal, the rotationof the top permitting the leaves to fold into the pedestal; a membersupported for rotation upon the pedestal below the top; connectionspivoted to the leaves and pivoted to the rot-atable member for movementtransversely of the plane of the rotation of the rotatable member; and alocking device upon the pedestal engaging said member to hold the sameagainst rotation and to hold the leaves fixed with respect to the top.

2. In a device of the class described, a pedestal including a fixedmember; a shaft mounted in the pedestal and in the fixed member; a toplocated above the fixed member and held by the shaft; a rotatable memberjournaled upon the shaft below the fixed member; a spring interposedbetween the pedestal and the rotatable member and adapted to thrust therotatable member against the fixed member; leaves hinged to the top andsupported upon the pedestal, the rotation of the top permitting theleaves to fold on the pedestal; connections pivoted to the leaves, theconnections being pivoted to the rotatable member for movement transversely of the plane of rotation of the rotatable member.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

CLARENCE S. BURNHAM.

Witnesses:

J. A. ALMY, L. J. SIMPSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, 11.0.

